A police officer in Edmonton, Canada, was stabbed and four civilians injured in two incidents officials are investigating as connected "acts of terrorism."

Police said a man drove "at a high rate of speed" into a police barricade where an officer was directing traffic outside an Edmonton Eskimos Canadian Football League game at about 8:15 p.m. local time Saturday evening in Alberta province.

The 30-year-old suspect then exited the vehicle, a white Chevrolet Malibu, and used a knife to attack an officer who had been thrown to the ground in the collision, police said.

The officer was stabbed multiple times, but police reported his injuries are not life-threatening.

The suspect then fled the scene on foot and managed to escape police.

Two hours later, police pulled over the driver of a U-Haul truck at a police checkpoint in the city and asked for the person's license. The officer noticed the name was similar to the owner of the Chevy Malibu, upon which the U-Haul driver fled the scene with police in pursuit.

According to police, the U-Haul driver drove toward downtown Edmonton and "attempted to deliberately hit pedestrians in the crosswalk." Four civilians were injured, however, police did not have an update on their conditions.

The U-Haul flipped on its side on Jasper Avenue, a main thoroughfare through downtown Edmonton, during the chase and police managed to apprehend the individual, police said.

The two incidents are believed to be related, and according to police, they believe the person acted alone.

The Edmonton Police Service said an ISIS flag was displayed on the dashboard of the Chevy Malibu that rammed the officer outside Commonwealth Stadium. Police confirmed the item was taken as evidence, but would only say it was part of the investigation.